ColorSpace WhitePoint Property. The white point for the color space specified in CIE 1931 XYZ space. ABCpdf .NET PDF Library.

The white point for the color space specified in CIE 1931 XYZ space.

This property is only valid for color spaces in which the ColorSpaceType is CallGray, CalRGB or Lab.

X and Y must be positive and Z must be one. The default for this peroperty is 0 0 0.

When you set this property a clone of the XColor you assign is created to avoid one XColor being shared by multiple color spaces.

In this example we show how to use the WhitePoint and BlackPoint with a calibrated RGB color space.

[C#]
using (Doc doc = new Doc()) {
  doc.Width = 80;
  doc.Rect.Inset(50, 50);
  ColorSpace cs = new ColorSpace(doc.ObjectSoup, ColorSpaceType.CalRGB);
  cs.WhitePoint.SetComponents(0.9, 1.0, 1.1);
  cs.BlackPoint = XColor.FromComponents(0.1, 0.1, 0.1);
  doc.ColorSpace = cs.ID;
  doc.Color.SetComponents(0.9, 0.1, 0.1); // red
  doc.AddOval(true);
  doc.Save("examplecalrgbcolorspace.pdf");
}

[Visual Basic]
  Using doc As New Doc()
    doc.Width = 80
    doc.Rect.Inset(50, 50)
    Dim cs As New ColorSpace(doc.ObjectSoup, ColorSpaceType.CalRGB)
    cs.WhitePoint.SetComponents(0.9, 1.0, 1.1)
    cs.BlackPoint = XColor.FromComponents(0.1, 0.1, 0.1)
    doc.ColorSpace = cs.ID
    doc.Color.SetComponents(0.9, 0.1, 0.1)
    ' red
    doc.AddOval(True)
    doc.Save("examplecalrgbcolorspace.pdf")
  End Using
End Sub


examplecalrgbcolorspace.pdf